fix: add redirects for content no longer in the Gatsby toolchain

* Tutorials should be accessed from ably.com/tutorials
* Client library development guides have moved to sdk.ably.com in #1608

.circleci/config.yml

@@ -151,6 +151,15 @@ jobs:
             ./bin/assert-success.sh /docs/quick-start-guide
             ./bin/assert-redirect.sh /docs/quick-start-guide/ \
                                      https://localhost/docs/quick-start-guide
+      - run:
+          name: Test website redirects
+          command: |
+            ./bin/assert-redirect.sh /tutorials https://ably.com/tutorials
+      - run:
+          name: Test client library redirects
+          command: |
+            ./bin/assert-redirect.sh /client-lib-development-guide \
+                                     https://sdk.ably.com/builds/ably/specification/main/
 
 workflows:
   test_branch:

config/client-lib-development-guide-redirects.conf

@@ -0,0 +1,13 @@
+# These pages for the client library development guides used to be accessible
+# on docs.ably.com, but have moved to sdk.ably.com and are no longer available
+# in the Gatsby toolchain.
+
+/client-lib-development-guide/comet https://sdk.ably.com/builds/ably/specification/main/comet/;
+/client-lib-development-guide/encryption https://sdk.ably.com/builds/ably/specification/main/encryption/;
+/client-lib-development-guide/feature-prioritisation https://sdk.ably.com/builds/ably/specification/main/feature-prioritisation/;
+/client-lib-development-guide/features https://sdk.ably.com/builds/ably/specification/main/features/;
+/client-lib-development-guide/protocol https://sdk.ably.com/builds/ably/specification/main/protocol/;
+/client-lib-development-guide/test-api https://sdk.ably.com/builds/ably/specification/main/test-api/;
+/client-lib-development-guide/versioning https://sdk.ably.com/builds/ably/specification/main/versioning/;
+/client-lib-development-guide/websocket https://sdk.ably.com/builds/ably/specification/main/websocket/;
+/client-lib-development-guide https://sdk.ably.com/builds/ably/specification/main/;

config/nginx.conf.erb

@@ -51,6 +51,8 @@ http {
   # Creates a map of redirects for us
   map $uri $redirected_url {
     default "none";
+    include website-redirects.conf;
+    include client-lib-development-guide-redirects.conf;
     <% if File.exists?(File.dirname(__FILE__) + '/nginx-redirects.conf') %>
     include nginx-redirects.conf;
     <% end %>

config/website-redirects.conf

@@ -0,0 +1,4 @@
+# Redirect pages that used to be available in the nanoc toolchain, back
+# to the website where people should be accessing them
+
+~^/tutorials(.*)$ https://ably.com/tutorials$1;